She devised a system called 'fair play' to address the domestic inequality for women - and it all began with one simple text message from her husband that read: 'I'm surprised you didn't get blueberries.'

"I found that the smallest details were causing the biggest problems in partnerships," Rodsky said.

"A COO of a publicly-traded company was telling me the biggest challenge in her life was getting her husband to take out the kitty litter.

"There was an underlying perceived unfairness that was causing a lot of resentment in couples."

Four rules of Fair Play

1. All time is created equal

"What I found was that men and women were viewing men's time as finite like diamonds, and women's time infinite, like sand," Rodsky said.

"That came about mostly when I interviewed men and women with the same job - and the men were saying to me, I don't have time to pack lunches, I have to get to the office. But the women in the same jobs were saying to me, I find the time.

"All time is created equal, and once we recognise that, things change."

2. Reclaim your right to be interesting

"I had a woman who said to me that she lost her permission to be interesting," Rodsky said.

"Her entire life became these 'stuff I do' tasks - but no matter what your domestic situation is, nobody can hold all the cards.

"When men lean into the home and show true ownership of some domestic tasks, there was a shift in the perceived unfairness to fairness in the relationship.

"It did not have to be 50/50 - that's the wrong equation. The right equation is fair for your family."

3. Start where you are now

"The Fair Play system is based on 100 cards that represent all domestic tasks that you would have to do to run a home and raise a family," Rodsky said.

"When the partner who is doing less in the home starts with just one card, it can be transformative.

"Take groceries, for example - it's not just showing up to get the mustard, but planning what the grocery list will look like, writing it down and then going to the store."

4. Establish your values and standards

"The only time I saw the Fair Play system fail is when couples went straight into trying to divvy up the domestic duties," Rodsky said.

"That's just another list. One of the main rules of Fair Play is starting with your values.

"My husband and I didn't just say, who's taking out the garbage? We sat down and asked, why do we value garbage? Why do we value a tidy house?

"I told him that I grew up with a mother who's really messy and it triggered me from my childhood, and he said that he lived in a fraternity so he didn't really care about garbage.

"Once we decided on a minimum standard of care, which was the garbage goes out at 7pm every night, guess what? The garbage goes out at 7pm every night.